[Greenbuilding] [BULK] Re: Al Pex for Solar Heating System

[Lawrence Lile]

Kieth, I think I remember you being the one using radiators for air heat
exchange, how would they work for water heat exchange?  Stick one in a
big EPDM lined plywood tank, run the glycol loop through that and your
collectors?  It OUGHT to work.

10' square EPDM can be bought for $46 from here: 

http://www.flatroofsolutions.com/index.php

Enough for a 3 foot cube tank, about 194 gallons

Lawrence Lile, PE, LEED AP
Project Solutions Engineering

-----Original Message-----
From: greenbuilding-bounces at listserv.repp.org
[mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Keith
Winston
Sent: Sunday, January 06, 2008 1:37 PM
To: Bob Korves
Cc: greenbuilding at listserv.repp.org
Subject: [BULK] Re: [Greenbuilding] Al Pex for Solar Heating System
Importance: Low

One challenge one runs into with radiator and other unusual (from a 
house plumbing point of view) hoses is pressure: as long as you keep 
your system at heating-system pressure (i.e. 12 psi or so) they can 
work, many of them can't take higher pressures when they are hot I 
believe (isn't a car pressure relief around 12-15 psi?). On a 
multi-story install that might be hard for the full height of the 
system, though using them just at the top might be made to work... I got

some special high-temp plastic hose from US Plastics for one stretch, it

was a bit pricey (I think $3/ft). Thanks for the link to Gates, I don't 
know them yet.